6560761 has 4 divisors (see below), whose sum is σ = 6577524. Its totient is φ = 6544000.

The previous prime is 6560753. The next prime is 6560767. The reversal of 6560761 is 1670656.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5035536 + 1525225 = 2244^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 6560761 - 2³ = 6560753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6560767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7780 + ... + 8581.

It is an arithmetic number, because the mean of its divisors is an integer number (1644381).

Almost surely, 2^6560761 is an apocalyptic number.

It is an amenable number.

6560761 is a deficient number, since it is larger than the sum of its proper divisors (16763).

6560761 is a wasteful number, since it uses less digits than its factorization.

6560761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16762.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 6560761 is about 2561.3982509559. The cubic root of 6560761 is about 187.2052708873.

The spelling of 6560761 in words is "six million, five hundred sixty thousand, seven hundred sixty-one".